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<title>Problem 2549. -- [Ctsc2001]最优据排序二叉树 -- 衡阳八中OJ离线版-2012-02-29</title><center><h2>2549: [Ctsc2001]最优据排序二叉树</h2><span class=green>Time Limit: </span>3 Sec&nbsp;&nbsp;<span class=green>Memory Limit: </span>128 MB<br><span class=green>Submit: </span>4&nbsp;&nbsp;<span class=green>Solved: </span>4<br>[<a href='submitpage.php?id=2549'>Submit</a>][<a href='problemstatus.php?id=2549'>Status</a>][<a href='bbs.php?id=2549'>Discuss</a>]</center><h2>Description</h2><div class=content><p><img alt="" src="/JudgeOnline/upload/201112/1(8).jpg" /></p></div><h2>Input</h2><div class=content><p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><span style="font-size: 12pt; font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">其中第一行是一个整数</span><span lang="EN-US" style="font-size: 12pt"><font face="Times New Roman">n(1&lt;=n&lt;=18)</font></span><span style="font-size: 12pt; font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，随后</span><span lang="EN-US" style="font-size: 12pt"><font face="Times New Roman">4n<sup>2</sup></font></span><span style="font-size: 12pt; font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">行，依次为三棱锥四个面上所填的数字。</span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><span style="font-size: 12pt; font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><img alt="" src="/JudgeOnline/upload/201112/2(4).jpg" /></span></p></div><h2>Output</h2><div class=content><div style="text-indent: 24pt"><span style="font-size: 12pt">其中仅包含一个整数，表示最大的排序二叉树所含的节点数目。</span></div>
<p><img alt="" src="/JudgeOnline/upload/201112/3(2).jpg" /></p></div><h2>Sample Input</h2>
			<div class=content><span class=sampledata>3<br />
19<br />
33<br />
32<br />
31<br />
29<br />
3<br />
5<br />
4<br />
30<br />
22<br />
25<br />
20<br />
21<br />
12<br />
24<br />
23<br />
34<br />
35<br />
14<br />
13<br />
15<br />
26<br />
18<br />
17<br />
8<br />
16<br />
27<br />
11<br />
10<br />
9<br />
1<br />
28<br />
7<br />
2<br />
6<br />
36<br />
</span></div><h2>Sample Output</h2>
			<div class=content><span class=sampledata>17<br />
</span></div><h2>HINT</h2>
			<div class=content><p></p></div><h2>Source</h2>
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